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RCA- mass produce radios. AM- inferior to 78s (1 jan 1920 ano – 31 dez 1929 ano)

Descrição:

RCA begins mass producing radios. The AM sound is inferior to 78s. Record companies and radio companies fight over artist control

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19 out 2018

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415

Data:

1 jan 1920 ano

31 dez 1929 ano

~ 10 years

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